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1 /* |
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2 * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Task to generate a cropped thumbnail for a JPEG image. |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 |
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21 /** |
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22 * @internal reviewed 31/07/2007 by Simon Brooks |
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23 */ |
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24 |
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25 #include "glxtnzoomedimagetask.h" |
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26 |
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27 #include <fbs.h> |
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28 #include <glxassert.h> |
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29 #include <glxlog.h> |
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30 #include <IclExtJpegApi.h> // For CExtJpegDecoder |
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31 #include <glxtracer.h> |
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32 |
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33 #include "glxtnfileinfo.h" |
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34 #include "glxtnfileutility.h" |
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35 #include "glxtnthumbnailrequest.h" |
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36 #include "mglxtnthumbnailcreatorclient.h" |
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37 |
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38 // ----------------------------------------------------------------------------- |
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39 // NewL |
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40 // ----------------------------------------------------------------------------- |
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41 // |
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42 CGlxtnZoomedImageTask* CGlxtnZoomedImageTask::NewL( |
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43 const TGlxThumbnailRequest& aRequestInfo, |
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44 CGlxtnFileUtility& aFileUtility, MGlxtnThumbnailCreatorClient& aClient) |
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45 { |
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46 TRACER("CGlxtnZoomedImageTask* CGlxtnZoomedImageTask::NewL( const TGlxThumbnailRequest& aRequestInfo, CGlxtnFileUtility& aFileUtility, MGlxtnThumbnailCreatorClient& aClient)"); |
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47 CGlxtnZoomedImageTask* task = new (ELeave) CGlxtnZoomedImageTask( |
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48 aRequestInfo, aFileUtility, aClient); |
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49 CleanupStack::PushL(task); |
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50 task->ConstructL(aRequestInfo.iBitmapHandle); |
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51 CleanupStack::Pop( task ); |
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52 return task; |
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53 } |
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54 |
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55 // ----------------------------------------------------------------------------- |
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56 // Destructor |
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57 // ----------------------------------------------------------------------------- |
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58 // |
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59 CGlxtnZoomedImageTask::~CGlxtnZoomedImageTask() |
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60 { |
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61 TRACER("CGlxtnZoomedImageTask::~CGlxtnZoomedImageTask()"); |
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62 delete iDecoder; |
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63 delete iInfo; |
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64 delete iThumbnail; |
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65 } |
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66 |
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67 // ----------------------------------------------------------------------------- |
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68 // Constructor |
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69 // ----------------------------------------------------------------------------- |
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70 // |
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71 CGlxtnZoomedImageTask::CGlxtnZoomedImageTask( |
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72 const TGlxThumbnailRequest& aRequestInfo, |
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73 CGlxtnFileUtility& aFileUtility, |
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74 MGlxtnThumbnailCreatorClient& aClient) : |
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75 CGlxtnClientTask(KGlxtnTaskIdZoomedThumbnail, aRequestInfo.iId, aClient), |
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76 iFileUtility(aFileUtility), iRequestedSize(aRequestInfo.iSizeClass), |
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77 iCroppingRect(aRequestInfo.iCroppingRect), iFilter(aRequestInfo.iFilter), |
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78 iDrmAllowed(aRequestInfo.iDrmAllowed) |
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79 { |
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80 TRACER("CGlxtnZoomedImageTask::CGlxtnZoomedImageTask( const TGlxThumbnailRequest& aRequestInfo, CGlxtnFileUtility& aFileUtility, MGlxtnThumbnailCreatorClient& aClient)"); |
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81 } |
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82 |
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83 // ----------------------------------------------------------------------------- |
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84 // ConstructL |
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85 // ----------------------------------------------------------------------------- |
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86 // |
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87 void CGlxtnZoomedImageTask::ConstructL(TInt aBitmapHandle) |
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88 { |
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89 TRACER("void CGlxtnZoomedImageTask::ConstructL(TInt aBitmapHandle)"); |
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90 // Duplicate the client's bitmap |
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91 iThumbnail = new (ELeave) CFbsBitmap(); |
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92 User::LeaveIfError(iThumbnail->Duplicate(aBitmapHandle)); |
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93 } |
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94 |
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95 // ----------------------------------------------------------------------------- |
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96 // DoStartL |
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97 // ----------------------------------------------------------------------------- |
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98 // |
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99 TBool CGlxtnZoomedImageTask::DoStartL(TRequestStatus& aStatus) |
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100 { |
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101 TRACER("TBool CGlxtnZoomedImageTask::DoStartL(TRequestStatus& aStatus)"); |
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102 iInfo = new (ELeave) CGlxtnFileInfo; |
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103 Client().FetchFileInfoL(iInfo, ItemId(), &aStatus); |
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104 iState = EStateFetchingUri; |
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105 |
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106 return ETrue; |
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107 } |
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108 |
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109 // ----------------------------------------------------------------------------- |
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110 // DoCancel |
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111 // ----------------------------------------------------------------------------- |
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112 // |
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113 void CGlxtnZoomedImageTask::DoCancel() |
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114 { |
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115 TRACER("void CGlxtnZoomedImageTask::DoCancel()"); |
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116 if ( EStateFetchingUri == iState ) |
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117 { |
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118 Client().CancelFetchUri(ItemId()); |
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119 } |
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120 if ( iDecoder ) |
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121 { |
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122 iDecoder->Cancel(); |
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123 } |
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124 |
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125 iFileUtility.ClearBadFileMarker(); |
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126 } |
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127 |
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128 // ----------------------------------------------------------------------------- |
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129 // DoRunL |
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130 // ----------------------------------------------------------------------------- |
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131 // |
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132 TBool CGlxtnZoomedImageTask::DoRunL(TRequestStatus& aStatus) |
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133 { |
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134 TRACER("TBool CGlxtnZoomedImageTask::DoRunL(TRequestStatus& aStatus)"); |
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135 TInt error = aStatus.Int(); |
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136 TBool active = EFalse; |
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137 |
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138 if ( KErrNone == error ) |
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139 { |
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140 switch ( iState ) |
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141 { |
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142 case EStateFetchingUri: |
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143 { |
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144 User::LeaveIfNull(iInfo); |
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145 iFileUtility.CheckBadFileListL( iInfo->FilePath() ); |
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146 |
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147 TBool video; |
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148 iInfo->IdentifyFileL(video, iProtected); |
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149 if ( iProtected && !iDrmAllowed ) |
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150 { |
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151 User::Leave(KErrAccessDenied); |
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152 } |
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153 |
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154 DecodePartialImageL(aStatus); |
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155 active = ETrue; |
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156 iState = EStateDecoding; |
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157 } |
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158 break; |
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159 |
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160 case EStateDecoding: |
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161 // Nothing to do |
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162 break; |
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163 |
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164 default: |
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165 GLX_ASSERT_ALWAYS( EFalse, Panic( EGlxPanicIllegalState ), |
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166 "CGlxtnZoomedImageTask: Illegal state" ); |
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167 break; |
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168 } |
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169 } |
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170 |
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171 if ( !active ) |
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172 { |
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173 iFileUtility.ClearBadFileMarker(); |
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174 Client().ThumbnailFetchComplete(ItemId(), |
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175 EGlxThumbnailQualityHigh, error); |
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176 } |
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177 |
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178 return active; |
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179 } |
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180 |
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181 // ----------------------------------------------------------------------------- |
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182 // DoRunError |
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183 // ----------------------------------------------------------------------------- |
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184 // |
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185 TBool CGlxtnZoomedImageTask::DoRunError(TInt aError) |
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186 { |
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187 TRACER("TBool CGlxtnZoomedImageTask::DoRunError(TInt aError)"); |
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188 iFileUtility.ClearBadFileMarker(); |
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189 Client().ThumbnailFetchComplete(ItemId(), EGlxThumbnailQualityHigh, aError); |
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190 |
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191 return EFalse; |
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192 } |
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193 |
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194 // ----------------------------------------------------------------------------- |
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195 // DecodePartialImageL |
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196 // ----------------------------------------------------------------------------- |
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197 // |
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198 void CGlxtnZoomedImageTask::DecodePartialImageL(TRequestStatus& aStatus) |
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199 { |
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200 TRACER("void CGlxtnZoomedImageTask::DecodePartialImageL(TRequestStatus& aStatus)"); |
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201 TRAPD(err, CreateDecoderL(CExtJpegDecoder::EHwImplementation)); |
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202 if ( KErrNone != err ) |
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203 { |
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204 CreateDecoderL(CExtJpegDecoder::ESwImplementation); |
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205 } |
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206 |
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207 TSize sourceSize(iDecoder->FrameInfo().iOverallSizeInPixels); |
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208 if ( 0 == sourceSize.iWidth || 0 == sourceSize.iHeight ) |
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209 { |
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210 User::Leave(KErrCorrupt); |
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211 } |
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212 |
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213 iCroppingRect.Intersection(TRect(sourceSize)); |
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214 if ( iCroppingRect.IsEmpty() ) |
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215 { |
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216 User::Leave(KErrArgument); |
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217 } |
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218 |
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219 // Find max scaling factor which won't make image smaller than target size |
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220 TInt shift = 3; |
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221 while ( shift |
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222 && (sourceSize.iWidth >> shift) < iRequestedSize.iWidth |
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223 && (sourceSize.iHeight >> shift) < iRequestedSize.iHeight ) |
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224 { |
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225 shift--; |
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226 } |
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227 TInt fudge = (1 << shift) - 1; // Used to "round up" the scaled values |
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228 TSize loadSize((iCroppingRect.Width() + fudge) >> shift, |
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229 (iCroppingRect.Height() + fudge) >> shift); |
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230 |
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231 // Resize empty bitmap to required size |
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232 User::LeaveIfError(iThumbnail->Resize(loadSize)); |
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233 |
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234 iDecoder->SetCroppingL(iCroppingRect); |
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235 iDecoder->Convert(&aStatus, *iThumbnail); |
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236 } |
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237 |
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238 // ----------------------------------------------------------------------------- |
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239 // CreateDecoderL |
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240 // ----------------------------------------------------------------------------- |
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241 // |
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242 void CGlxtnZoomedImageTask::CreateDecoderL(TInt aDecoderType) |
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243 { |
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244 TRACER("void CGlxtnZoomedImageTask::CreateDecoderL(TInt aDecoderType)"); |
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245 delete iDecoder; |
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246 iDecoder = NULL; |
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247 iDecoder = CExtJpegDecoder::FileNewL( |
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248 static_cast<CExtJpegDecoder::TDecoderType>(aDecoderType), |
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249 iFileUtility.FsSession(), iInfo->FilePath()); |
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250 |
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251 if ( !(CExtJpegDecoder::ECapCropping & iDecoder->CapabilitiesL()) ) |
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252 { |
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253 User::Leave(KErrNotSupported); |
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254 } |
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255 } |
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256 |
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257 // End of File |